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U.S. Department of Energy
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Hadronic production of J/[psi] at large [chi][sub F] in 800 GeV p+Cu and p+Be collisions

Technical Report ·
DOI:https://doi.org/10.2172/6690251· OSTI ID:6690251
The differential cross-section d[sigma]/dx[sub F] for J/[psi] production in 800 GeV proton-nucleus collisions has been measured in the kinematic range 0.30 [le] x[sub F] [le] 0.95 and x[sub F] [lt] p[perpendicular] [lt] 5 GeV through the decay mode J/[psi] [yields] [mu][sup +][mu][sup [minus]]. The nuclear dependence of J/[psi] production over this range was measured using copper and beryllium targets. The differential cross sections are in good agreement with the predictions of the symbolical parton duality model. The data show no evidence for an intrinsic charm component in the proton. The ratio of the differential cross sections for copper and beryllium shows a suppression of J/[psi] production in copper which increases with increasing x[sub F].
Research Organization:
Lawrence Berkeley Lab., CA (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC03-76SF00098
OSTI ID:
6690251
Report Number(s):
LBL-33331; ON: DE93007706
Country of Publication:
United States
Language:
English